| 摘要 |
PROBLEM TO BE SOLVED: To reduce water accumulated inside of a covering part.SOLUTION: A wooden beam 10 as a structural member has a core part 12 and a burning layer 22 as a covering part for covering the core part 12. The core part 12 has a wooden load support part 14 for supporting a long-term load and a burning stop layer 16 arranged outside the load support layer 14. A plurality of drain holes 24 as a plurality of exhaust ports are formed in lower ends of side wall parts 22S of the burning layer 22. The drain holes 24 penetrate the side wall parts 22S of the burning layer 22, and reach a boundary T between the core part 12 and the burning layer 22. |
